diff --git a/deno2/deno_internal.h b/deno2/deno_internal.h
index 92f891af38..8472f4264f 100644
--- a/deno2/deno_internal.h
+++ b/deno2/deno_internal.h
@@ -8,14 +8,13 @@
 #include "v8/include/v8.h"
 
 extern "C" {
-
 // deno_s = Wrapped Isolate.
 struct deno_s {
   v8::Isolate* isolate;
   std::string last_exception;
   v8::Persistent<v8::Function> recv;
   v8::Persistent<v8::Context> context;
-  RecvCallback cb;
+  deno_recv_cb cb;
   void* data;
 };
 }
@@ -29,7 +28,7 @@ static intptr_t external_references[] = {reinterpret_cast<intptr_t>(Print),
                                          reinterpret_cast<intptr_t>(Recv),
                                          reinterpret_cast<intptr_t>(Send), 0};
 
-Deno* NewFromSnapshot(void* data, RecvCallback cb);
+Deno* NewFromSnapshot(void* data, deno_recv_cb cb);
 
 v8::StartupData MakeSnapshot(v8::StartupData* prev_natives_blob,
                              v8::StartupData* prev_snapshot_blob,
diff --git a/deno2/from_snapshot.cc b/deno2/from_snapshot.cc
index bec29d2dca..db5b0fc8e9 100644
--- a/deno2/from_snapshot.cc
+++ b/deno2/from_snapshot.cc
@@ -16,7 +16,7 @@ namespace deno {
 #include "natives_deno.cc"
 #include "snapshot_deno.cc"
 
-Deno* NewFromSnapshot(void* data, RecvCallback cb) {
+Deno* NewFromSnapshot(void* data, deno_recv_cb cb) {
   auto natives_blob = *StartupBlob_natives();
   auto snapshot_blob = *StartupBlob_snapshot();
 
@@ -46,8 +46,7 @@ Deno* NewFromSnapshot(void* data, RecvCallback cb) {
 }  // namespace deno
 
 extern "C" {
-
-Deno* deno_new(void* data, RecvCallback cb) {
+Deno* deno_new(void* data, deno_recv_cb cb) {
   return deno::NewFromSnapshot(data, cb);
 }
 }
diff --git a/deno2/include/deno.h b/deno2/include/deno.h
index caf6ee9746..fb00385492 100644
--- a/deno2/include/deno.h
+++ b/deno2/include/deno.h
@@ -18,14 +18,14 @@ struct deno_s;
 typedef struct deno_s Deno;
 
 // The callback from V8 when data is sent.
-typedef deno_buf (*RecvCallback)(Deno* d, deno_buf buf);
+typedef deno_buf (*deno_recv_cb)(Deno* d, deno_buf buf);
 
 void deno_init();
 const char* deno_v8_version();
 void deno_set_flags(int* argc, char** argv);
 
 // Constructor
-Deno* deno_new(void* data, RecvCallback cb);
+Deno* deno_new(void* data, deno_recv_cb cb);
 
 // Returns nonzero on error.
 // Get error text with deno_last_exception().